Untitled

DNA Interactions Mediated by Cyclopentadienidoruthenium(II) Complexes Containing Water‐Soluble Phosphanes

“…This procedure gives 1 in much higher yield than the one described previously [19] by Suárez et al from the direct reaction of freshly distilled CpH with RuCl 3 ·3H 2 O and mTPPMS in refluxing ethanol. The compound obtained shows good solubility in water (41 mg mL -1 , 4.41 ϫ 10 -2 ) as a consequence of the two mTPPMS ligands, whose presence is supported by elemental analysis and a spectroscopic investigation (see Experimental Section).…”

“…Complex 6 is only moderately soluble in [D 6 ]DMSO, in which its 31 P{ 1 H} NMR exhibits two broad signals for mTPPMS each corresponding to one P atom and a broad resonance integrating for one P atom with a chemical shift that is distinctive for ruthenium-bonded mPTA (δ = -29.66 ppm). [19] Steric crowding around ruthenium can be invoked to account for the magnetic inequivalency of the two mTPPMS ligands, but unfortunately the low solubility of 6 in solvents other than DMSO prevented us from performing a complete NMR investigation at low temperature, where the appearance of a distinct AMQ spin system could be anticipated.…”

Hydroformylation reactions of the trans-Mo(CO)4(p-C5NH4SO3NA)2 complex in biphasic medium

“…The liquid substrates used in catalysis were distilled before use; EtOH, toluene and H 2 O were purified as described in the literature [12]. A real naphtha cut used was from the El Palito refinery, Venezuela.…”

Hydroformylation of naphthas with a rhodium complex in biphasic medium

“…Into a three necked 50 mL Schlenk flask, under argon atmosphere 0.0851 g (0.22 mmols) of bis -(μ-chlorodicarbonyl rodium (I)) ([Rh 2 (CO) 4 Cl 2 ]) in 10 mL of 96% ethanol, with strong stirring, 0.3020 g (0.87 mmols) of monosulfonated phosphine in 10 mL of 96% ethanol were added dropwise. The mixture was refluxed at 80ºC for 2 hours.…”